Interlocking mechanism for cold-saw-cutting-off and like machines



G, F. MUTH.

INTERLOCKING MECHANISM FOR COLD SAW CUTTING OFF AND LIKE MACHINES. APPLICATION FILED JAN- 8|19I9. 1,335,597. Patented Mar. 3fl,192, g 2 SHEETSSHEET 1- I FTW TT F F* i H. 5

C s f 1 935W IWW MACHINES. l ILED JA 8,1919. 1,335,597. Patented Mar. 30, 19290 2 SHEETS-SHEET Z- quick return feed.

GEORGE F. MUTH, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO NEWTON MACHINE TOOL WORKS, INCORPORATED, 0F PHILADELPHIA, PENNSYL- VANIA, A CORPORATION OF PENNSYLVANIA. I

INTERLOCKING- MECHANISM FOR COLD-SAW-CUTTING-OFF AND LIKE MACHINES.

Application. filed January 8, 1919.

To all whom it may concern: v

Be it known that I, GEORGE F. MUTE, a citizen 'of the, United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Interlocking Mechanism. for Cold-Saw-Cutting-Ofi and like Machines, of which the following is a speci* fication.

My invention relates to certain improvements in interlocking mechanisms, such as illustrated in the patent granted to M. Meyers, No. 1,081,763, December 16, 1913, in which there is a slow forward feed. and a In a machine of this type there aretwo operating rods and one ob ect of my invention is to provide a simple and 'efl'ective means whereby an operating lever cannot actuate one rod to move it from its normal position without first moving the other to its normal position.

A further object of the invention is to construct the device so that one operating arm may actuate both rods.

In the accompanying drawings:

Figure 1 is a' sectional elevation of my improved interlocking device;

Fig. 2 is a plan view;

Fig. 3 is a side view Fig. 4 is a perspective view of the bearing for the operating, rods;

Fig. 5 is a detached perspective view of the operating rods;

Fig. 6 is a perspective view of the operating lever; and

Fig. 7 is a face view of the bearing plate.

The machine of the above mentioned patcut is a cold saw cutting off machine. In this machine it is desirable to have a slow forward feed while the saw is cutting and a quick return.

1 is a rod, in the present instance, for shifting the operating mechanism, whereby a slow forward feed is thrown into gear. 2 is the rod connected to the mechanism for throwing the quick return feed into gear. In the present instance each rod has a rectangular head. As there is a gear and clutch mechanism, such as illustrated in the above mentioned patent, one rod must be brought to the normal position before the other rod can be operated so that the shifting of the operating rod takes place when both rods are in the normal position, such as in Fig. 3. 3 is a portion of the base of a Specification of Letters Patent.

Patented Mar. 30, 1920.

Serial No. 270,190.

cold saw cutting off machine. This base has a bracket 4 carrying a bearing 5 for the rectangular heads 6 and? of the rods 1 and 2 respectively. These two rods extend through the. base 3 and are connected to the operating mechanism, such as illustrated in the above mentioned patent. The head 6' has a notch Sand the head 7 has a notch 9. When the two rods are inthe normal. position, these two notches aline with each other, as illustrated in Fig. 5.

10 is a spindle, rectangular in cross section, on which is a hub 11 having an extension 12, which is located in a bearing 13, projecting from a plate lsecured to the face ofthe bearing 5. On the lower end of this plate is a bearing 15, which receives the reduced cylindrical end of the spindle 10. The spindle isheld from liftin in its bearingby a nut 16 and washer. crewed into the hub 11, in the present instance, is an operating handle 17. In order to prevent the hub raising 013' of its bearings 13, I form in the extension 12 an annular groove 18 to receive a pin 19 screwed into the bearing 13 so that while the hub can turn on the bearing it cannot be moved longitudinally.

-Mounted so as to slide on the square spindle lO-is a sleeve 20 having an arm 21 which extends into the notches in the heads 6 and 7 of the-operating rods. The end of this arm 21 is rounded, in the present; instance, as at 22, Fig. .6, so as to bear with the least amount of friction on the side walls of the notches and to allow the arm to be shifted from one notch to the other without interference. The arm 21 extends from a slot 23 in the plate 14 and this slot has a lateral, elongated extension at its upper end in line with the notch 8 in the head 6 and lateral short extensions 26 and 27 in line with the notch 9 in the head 7. When the lever 21 is in line with the extension 24 of the notch it can only be moved in one direction but when the lever is in line with the notches 26 and 27 it can be moved in either direction.

When the sleeve 20 is in the lowest position, it rests upon the bearing 15, but when it is in the raised position, as in Fig. 1, it can be held in this position. In the present instance, I have shown a ball 28, back of which is a spring 29. This ball is adapted to a recess 30 in the spindle 10 and, consequently, when the ball is in this recess the sleeve is held in the upper position and the can be shifted into engagement with the head of the rod 1, or the head of the rod 2, but in order to shift the sleeve the two rods must be in their normal position with the notches 8 and 9 in alinement.

I claim:

1. The combination in a shifting device, of two rods, each rod being notched, the notches being so arranged that they will be in alinement when in the mid position; a bearing for the rods; a spindle; a bearing therefor; means for turning the spindle; a sleeve mounted so as to slide on but turn with the spindle; an arm on the spindle extending into the notches; and means for retaining the sleeve in its raised position and in alinement with the upper of the two rods.

The combination in a shifting apparatus, of two rods connected to the mechanism to be shifted, each rod having a head; a notch in each head, the two notches being in alinement when the rods are in their normal positions; a locking slot in the plate having lateral extensions in line with the two notches of the heads; an operating rod mounted in the front of the plate; means for turning said rod; a sleeve arranged to slide on but turn with the rod, said sleeve having an arm extending through the slot in the plate and into the notches, the parts being so arranged that when the sleeve is in one of its normal positions, it is in engagement with one head and when it is in the other extreme position, it is in engagement with the other head.

3. The combination in interlocking mechanism, of two rods connected to the means to be actuated; a head on each rod, the two rods being arranged side by side; a notch in each head, said notches being in alinement when the parts are in the normal position; a bearing in which the heads are mounted; a plate located in front of the bearing; bearings carried by the plate; a spindle having a hub mounted in the upper bearing, the spindle having a reduced portion mounted in the lower bearing on the plate; an operating arm secured to the hub; a sleeve arranged to move longitudinally on the spindle but to turn therewith, said sleeve being provided with an arm, the plate having a slot through which the arm extends, the end of the arm being located in the notch in one of the heads, the slot in the plate having a single lateral extension at the upper end and two lateral extensions at the lower end so that the shifting mechanism cannot be,

turned until it is'in either of its two extreme position and not until the slots in the two heads are in alinement.

4. The combination in interlocking mechanism, of two rods connected to the means to be actuated; a head on each rod; each head having a slot, the two slots being in alinement when the rods are in the normal position; a bearing for the heads; a plate secured to the bearingand having a notch therein, the notch having upper and lower extensions; an operating rod mounted in front of the plate; means for operating the rod; a sleeve mounted longitudinally on the rod, but arranged to turn therewith; and a spring-pressed ball carried by the sleeve and adapted to the notch in the spindle so that the sleeve will be held in its upper position by the ball. I

In witness whereof I aflix my signature.

GEORGE F. MUTH. 

